[Elecraft] Receiver Damage from another Close Station?

[Jim McDonald]

Before I got my K3 I had a ham move in 1000' from my antenna, and I wasn't
pleased.  In my previous location in AZ, I was 1700' from a ham too.

In both cases, I used an ICE front-end saver, which is cheap insurance.  See
http://www.iceradioproducts.com/reconly.html#rflimiter .  

I used a Model 196, but I see they also have a model that includes a
lightning arrestor / static drain, and another pair for 30-500 MHz.

I'd like to hear from someone more technically qualified than I am (that
means almost anyone) about the adequacy of the ICE units.

My last neighbor was in a rental house.  He moved out after a year, and I
breathed a sigh of relief.

Jim N7US



-----Original Message-----


Yes you should be concerned.  I would think about bandpass filtering and 
probably disconnecting the K3 when not on the air.  I was looking at the 
mods for the K3 and noticed one that addressed this issue.

Are we talking city lot or 20 acre parcels?

W0MU

On 3/2/2011 6:38 PM, w0ih wrote:
> My next door neighbor is a ham and recently upgraded to a Icom 7700, 200
> watt.
>
> The antennas for my K3 are pretty close to his.  I have a set of dipoles
> (160, 75, 60 that share a common feedline) that are about 30 feet off one
> leg from the neighbor's HyTower (75 thru 10 full size vertical).  I have a
> TH11DX up at 50 feet (boom is loaded for 40 meters also, separate
feedline)
> and he has a TH5DX at very close to the same level, directly east of my
> tower, about 100 feet away.
>
> I have a Heathkit SB 220 amp (2 kw input?).  Neighbor runs barefoot for
now.
>
> So, my question is, do I need to be concerned about damage to either rig?
> I'm assuming that we can't operate the same bands at the same time.  Our
> operating schedules seem to be very different for now.  But I'm wondering
if
> there could be input damage from one operating on any band, even if the
rig
> is off.
>
> I was wondering if the K3 input is grounded through a relay when turned
off,
> and similarly on the 7700.
>
> Any thoughts?
>
> Mike